Carlos Corporan, Ronny Cedeno, Matt Dominguez, Chris Carter and Justin Maxwell were also told they’re on the team, but all five were expected to make the club.

Porter and Luhnow gathered the nine players together before making the announcement.

“That’s one of the more enjoyable experiences that a general manager will have,” Luhnow said. “We had a pretty significant group of players that have never been on an opening-day roster before. And to be able to bring them in the room at this time of the year when people are nervous about being called into the room and notify them that not only are the making an opening-day roster for the first time but they’re part of history as the Astros move the American League … it’s a significant event.”

With Barnes and Martinez making the cut, the Astros’ outfield is expected to include Rick Ankiel in right, Carter in left and Maxwell in center. Barnes and Martinez are likely reserves.

White and Peacock are still battling for the No. 4 spot in the starting rotation. Porter said a decision will likely be made as late as possible, but the Astros will set their 1-5 pitchers before the regular season begins.

“Before the plane leaves (for Houston) on Thursday, we want people to know which way they’re coming,” Luhnow said.

Porter said the toughest decision came down to Barnes and Crowe. Barnes won a spot because of his versatility.

The Astros considered a scenario where Laird and either Barnes or Crowe could’ve made the team.

“Bo talks about the process a lot and this is part of the process,” said Crowe, who’ll soon report to Class AAA Oklahoma City and hopes to rejoin the team after the regular season begins.

Chia-Jen Lo was optioned to Class AAA.

Rule 5 pick Josh Fields is still battling for a relief spot, while starter/reliever Edgar Gonzalez could still make the club.

“God’s got a plan,” Fields said. “If I get sent out of here, then that’s where I’m supposed to be. And if I stay here, then that’s what’s supposed to happen, too. Obviously I’m hoping to stick around here.”

The Astros’ 40-man roster is at 40. However, the club will have to make two moves once Ankiel and Bedard are officially on the team. Cutting shortstop Tyler Greene — who was told Sunday he won’t make the team — would free up one spot.